package com.shaokel.controller.admin;

import com.shaokel.pojo.Tag;
import com.shaokel.service.TagService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

/**
 * @author 少丶客
 * @ClassName TagController
 * @Description TODO
 * @Date 2020/6/26 12:44
 * @Vesion 1.0
 */
@Controller
@RequestMapping("/admin")
public class TagController {

    @Autowired
    private TagService tagService;

    //分页查询
    @GetMapping("/tags")
    public String tags(@PageableDefault(size = 5,sort = {"id"},
            direction = Sort.Direction.DESC) Pageable pageable,
                        Model model){
        model.addAttribute("page",tagService.listTag(pageable));
        return "admin/tags";
    }

    //跳转添加tag页面
    @GetMapping("/tags/input")
    public String input(Model model){
        model.addAttribute("tag",new Tag());
        return "admin/tags-input";
    }

    @GetMapping("/tags/{id}/input")
    public String editInput(@PathVariable Long id,Model model){
        model.addAttribute("tag",tagService.getTag(id));
        return "admin/tags-input";
    }

    //新增tag
    @PostMapping("/tags")
    public String post(@Valid Tag tag, BindingResult result, RedirectAttributes attributes){
        Tag tag1 = tagService.getTagByName(tag.getName());
        if(tag1!=null){//数据库存在同名的tag
            result.rejectValue("name","nameError","不能重复添加标签");
        }
        if(result.hasErrors()){//存在异常
            return "admin/tags-input";
        }
        Tag t = tagService.savaTag(tag);
        if(t==null){
            attributes.addFlashAttribute("message","新增失败");
        }else{
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/tags";
    }

    //更新tag
    @PostMapping("/tags/{id}")
    public String editpost(@Valid Tag tag, BindingResult result, Long id, RedirectAttributes attributes){
        Tag tag1 = tagService.getTagByName(tag.getName());
        if(tag1!=null){//数据库存在同名的tag
            result.rejectValue("name","nameError","不能重复添加分类");
        }
        if(result.hasErrors()){
            return "admin/tags-input";
        }
        Tag t = tagService.updateTag(id,tag);
        if(t==null){
            attributes.addFlashAttribute("message","更新失败");
        }else{
            attributes.addFlashAttribute("message","更新成功");
        }
        return "redirect:/admin/tags";
    }

    //删除tag
    @GetMapping("/tags/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes){
        tagService.deleteTag(id);
        attributes.addFlashAttribute("message","删除成功");
        return "redirect:/admin/tags";
    }

}